A 30-kilovolt-ampere three-phase transformer has a 208-volt secondary. Using 1.732, approximately what full-load secondary current results?
- A144.2 amperes
- B48.1 amperes
- 83.3 amperes
- D6,240 amperes
Why C is correct
Three-phase current equals volt-amperes divided by 1.732 and line voltage. Dividing 30,000 by 1.732 and then by 208 gives approximately 83.3 amperes.